Figure. Maximum-likelihood phylogenetic tree of the hemagglutinin segment of HPAI subtype H5N8 virus isolated from birds, Novosibirsk, Western Siberia, Russia, 2020, and reference segments from GISAID (http://www.gisaid.org). Filled circles indicate HPAI H5N8 virus strains from Russia isolated in 2020; open circles indicate strains from Russia isolated during 2016–2018. Virus identification number, date of identification, and GISAID accession number are provided for all sequences. HPAI, highly pathogenic avian influenza.